Sinomenine ameliorates bleomycin A5-induced pulmonary fibrosis by blocking the miR-21/ADAMTS-1 signaling pathway in rats / 细胞与分子免疫学杂志

Objective To explore the impact of sinomenine on bleomycin A5-induced pulmonary fibrosis (PF) in rats and the underlying mechanism. Methods MRC-5 cells were cultured and treated with sinomenine to determine its optimal concentration and time through the MTT assay. Subsequently, MRC-5 cells were incubated with 80 μmol/L sinomenine for 48 hours or transfected with miR-21 mimic/a disintegrin-like and metalloproteinase with thrombospondin type 1 motif (ADAMTS-1) siRNA prior to sinomenine treatment. The expression of miR-21, ADAMTS-1, collagen type 1 (Col1) and collagen type 3 (Col3) was detected by quantitative real-time PCR (qRT-PCR) and/or Western blot analysis. Thirty SD rats were randomly divided into control group, sinomenine group and sinomenine combined with miR-21 agomir group, with 10 animals in each group. Bleomycin A5 were intratracheally administered to establish the PF model. Then, rats in control group, sinomenine group and sinomenine +miR-21 agomir group were treated with 9 g/L sodium chloride solution, sinomenine and sinomenine+miR-21 agomir, respectively. On day 28, all rats were sacrificed. HE and Masson staining was performed in pulmonary tissue. The expression of ADAMTS-1, Col1 and Col3 in pulmonary tissue were detected by qRT-PCR and/or Western blot analysis. ELISA was used to measure serum procollagen type 1 carboxyterminal propeptide (P1CP) and procollagen type 3 aminoterminal propeptide (P3NP) levels. Results Administration of sinomenine decreased miR-21 levels, up-regulated ADAMTS-1 expression, and promoted Col1 and Col3 degradation in MRC-5 cells. Importantly, interfering with the miR-21/ADAMTS-1 signaling pathway partially reversed the promotive effect of sinomenine on Col1 and Col3 degradation. Treatment of SD rats with sinomenine reduced alveolitis and PF scores, decreased serum P1CP and P3NP levels, up-regulated pulmonary ADAMTS-1 expression, and down-regulated Col1 and Col3 expression. However, these effects were reversed by miR-21 agomir. Conclusion Sinomenine promotes Col1 and Col3 degradation and inhibits PF in rats by miR-21/ADAMTS-1 pathway.

Sinomenine inhibits oxidative stress and pulmonary fibrosis by activating the Keap1/Nrf2 signaling pathway / 中国临床药理学与治疗学

AIM: To explore the protective effects of sinomenine (SIN) on oxidative stress and pulmonary fibrosis and its relationship with the Kelch-like ECH-associated protein 1 (Keap1)/nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway. METHODS: MRC-5 cells were treated with hydrogen peroxide (H2O2) to establish the oxidative stress injury model, followed by administration with SIN. Cell viability was detected using the CCK-8 method. The biochemical kits were employed to measure malondialdehyde (MDA) content and superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) activities. The protein expression of Keap1 and Nrf2 was examined by western blot. Thirty SD rats were randomly divided into control group, bleomycin A5 (BLM) group and BLM + SIN group, with 10 animals in each group. Bleomycin A5 were intratracheally administered to the rats in BLM group and BLM+SIN group to establish the pulmonary fibrosis model. The rats in control group received the same volume of 9 g/L sodium chloride solution. The second day after model construction, the rats in BLM+SIN group were gavaged with SIN, while the rats in the other two groups were treated with 9 g/L sodium chloride solution. On day 28, all rats were sacrificed. Pulmonary tissue was isolated, and HE and Masson staining was performed to observe the pathological changes. The MDA content and SOD, GSH-Px and CAT activities in pulmonary tissue were evaluated. Western blot was used to assay pulmonary tissues Keap1 and Nrf2 protein expression. RESULTS: When compared with H2O2 group, SIN treatment increased cell viability, decreased MDA content, elevated SOD, GSH-Px and CAT activities, down-regulated Keap1 expression, and promoted nuclear translocation of Nrf2 in MRC-5 cells. In comparison with BLM group, administration of SIN decreased alveolitis and pulmonary fibrosis pathological changes and scores as well as pulmonary tissue MDA content, enhanced pulmonary tissues SOD, GSH-Px and CAT activities, down-regulated pulmonary tissues Keap1 expression, and raised Nrf2 levels in the nucleus. CONCLUSION: SIN alleviates oxidative stress and pulmonary fibrosis possibly by activating the Keap1/Nrf2 signaling pathway.

Ultrasonic features of acute acalculous cholecystitis developing at different stages of acute pancreatitis / 医学研究生学报

Objective Acute pancreatitis exhibits different clinical and ultrasonic features in patients complicated with acute acalculous cholecystitis ( AAC) at different stages .The aim of this study was to analyze the ultrasonic characteristics of acute pancreati-tis complicated with AAC at different stages . Methods We retrospectively analyzed the clinical data about 41 cases of acute pancrea-titis with moderate to severe AAC .According to whether AAC developed within or after 2 weeks of the onset of acute pancreatitis , we divided the patients into an early-stage group (n=18) and a late-stage group (n=23).We recorded the gallbladder size, gallbladder wall thickness , fluid around the gallbladder , biliary sludge deposition and the Murphy′s sign by ultrasonography , obtained AAC-related clinical and laboratory data concerning body temperature , Murphy′s sign, WBC count and C-reactive protein level , and analyzed the ultrasonic features of AAC at different stages in the acute pancreatitis patients. Results All the patients experienced a fever of >38.5℃, 38.89%with chills in the early onset group and 47.83%in the late onset group .Increases were observed in patients of the early-and late-stage groups in the WBC count ( 94.44%vs 82.61%) , the C-reactive protein level ( 100%vs 91.30%) , and the fluid volume around the gallbladder (94.44%vs 60.86%, P<0.05), but incidence rate of gallbladder wall thickening was significantly lower in the former than in the latter group (11.11%vs 78.26%, P<0.01). Conclusion AAC developing at different stages of acute pancreatitis has different ultrasonic features , with higher incidence rates of fluid around the gallbladder in the early stage and gallbladder wall thickening in the late stage.

Application of systematic health education in the ultrasound guided interventional therapy for patients with cysts / 局解手术学杂志

Objective To investigate the effect of systematic health education on the ultrasound guided interventional therapy for pa -tients with cysts.Methods Totally 181 patients with cysts who received the ultrasound guided interventional therapy in our hospital ,were randomly divided into observation group and control group .The patients in the observation group received systematic health education ,while patients in control group received convention health education .Results The differences of pain score between two groups were statistical significance(P<0.05).By health education,the patients in the observation group had a deeper knowledge of the operation and became more cooperative(P<0.05).Conclusion Systematic health education could alleviate the pain and improve the psychological indisposition reac -tions of patients,and enhance therapeutic compliance of patients with ultrasound guided interventional therapy .In the meantime,systematic health education could improve the quality of work and enhance the diathesis of paramedic .

Misdiagnosis analysis of renal benign and malignant tumors with contrast-enhanced ultrasound / 中华超声影像学杂志

Objective To analyze the misdiagnosis reasons in renal tumors with contrast-enhanced ultrasound (CEUS) and to improve cognition on CEUS. Methods Two-hundred and eighty-five cases were compared with pathology, the images in 22 cases misdiagnosed on CEUS were reviewed retrospectively and the reasons were analyzed. Results The diagnosis accuracy and misdiagnosis rate of CEUS were 92. 28 % (263/285) and 7. 72%(22/285), respectively. In these 22 cases, 9 cases misdiagnosed as renal cell carcinoma (RCC) were conformed by pathology as renal angiomyolipoma(RAMD), showed 5 cases "fast wash-in and fast wash-out", 4 cases "fast wash-in and slowly wash-out". Seven cases were conformed as RCC, in which 5 were misdiagnosed as RAML, showed 4 cases "fast wash-in and slowly wash-out", 1 cases "simultaneously wash-in and simultaneously wash-out", and 2 were misdiagnosed as renal cyst with no enhancement founded. Four cases misdiagnosed as hematoma were conformed as pyelo-carcinoma, with no enhancement founded in renal pelvis. The remaining 2 cases misdiagnosed as inflammatory pseudotumor were conformed as RCC, showed "fast wash-in and slowly wash-out". Conclusions With the high diagnosis accuracy,CEUS is an important method in diagnosis of renal tumors. Analyzing the misdiagnosed reasons may improve the cognition on CEUS and decrease the misdiagnosis.

Influence of abdominal aorta extremity stenusis on proximal upstream artery haemodynamics in swines / 中华超声影像学杂志

Objective To study the haemodynamics changes in the proximal upstream artery caused by different degrees of abdominal aorta extremity stenosis.Methods The lateral walls of the abdominal aorta extremity were pinched with the vascular clamp to achieve 1/4,1/2 and 3/4 stenosis or occlusion in 6 juvenile susscrota domesticas,the velocity tracing of the proximal artery recorded,and the parameters of the peak systolic velocity(PSV)and minimum diastolic velocity(MDV)were obtained and statistically analyzed for their correlation with different degrees of abdominal aorta extremity stenosis.Results The diastolic velocity tracing vanished when stenosis reached a certain degree,the needle ridge and low amplitude diastolic velocity tracing emerged when stenosis to a certain extent,and only the needle ridge was present when the abdominal aorta extremity was completely obstructed.PSV reduced with the aggravation of stenosis.Conclusions The proximal upstream artery systolic ridge caused by abdominal aorta extremity stenosis tends to be acUminate,which indicates serious stenosis of the downstream artery.The systolic needle ridge and the absence of diastolic velocity tracing would suggest a complete obstruction of the blood stream in the downstream lumina.

Experimental analysis on formations of several ridges in peripheral artery velocity tracing / 中华超声影像学杂志

Objective To study the formations of several ridges in peripheral artery velocity tracing. Methods The experimental models of constrainting limb and adrenaline were performed in 6 juvenile susscrota domesticas,tbe variations of the external lilac artery velocity tracing observed,and the parameters of peak systolic velocity (PSV), minimum post-systolic velocity (MPV), peak diastolic velocity(PDV) and end diastolic velocity(EDV) were obtained. Results With the increase of downstream circulation resistance, systolic waveshape inclined to acumination, MPV gradually degraded to zero and negatively increased subsequently, diastolic wave amplitude lowered, and EDV gradually decreased to zero. The stronger vasoconstriction was, the more striking the variations were. Conclusions Cardiac ejection forms systolic dominant wave, post-systolic backward ware is the result of backstreaming because of elastic recoil of downstream artery,and diastolic forward ware is the result of blood transient acceleration caused by elastic recoil of upstream artery. Systemic vascular resistance has significant effect on diastolic waveshape,and the occurrence of post-systolic backward ware implies downstream circulation resistance obviously increases.

Contrast-enhanced ultrusonography in the diagnosis of hyperechoic renal tumors / 中华超声影像学杂志

Objective To investigate the value of the diagnosis of contrast-enhanced ultrasound(CEUS) in renal tumors. Methods Nineteen patients with hyperechoic renal tumors detected by CEUS underwent resection for suspected renal malignant and benign tumors. The characterization of hyperechoic renal tumors on CEUS was evaluated. Results Histopathologic results of resected lesions showed benign tumors in 11 patients with angiomyolipoma and malignancy in 8 patients with clear cell carcinoma. Six patients with angiomyolipoma showed rapid wash in contrast enhancement and slow wash out on all tumor and focal tumor (6/11). One patient with angiomyolipoma was observed in rapid wash in and wash out (1/11). Four patients with angiomyolipoma showed rapid wash in and negative contrast enhancement after rapid wash out(negative contrast enhancement compared to renal cortex,4/11). Five patients with clear cell carcinoma showed rapid wash in and wash out (5/8). Two patients with clear cell carcinoma showed rapid wash in and delayed wash out (2/8). One patient with showed no enhancement on CEUS (1/8). The pseudocapsule could be seen at 5 patients with clear cell carcinoma. Wash in enhancement and wash out on clear cell carcinoma were significant in comparison to these of angiomyolipoma (P<0.05). Wash in enhancement,delayed wash out and negative contrast enhancement were no significant between clear cell carcinoma and angiomyolipoma (P>0.05). Conclusions CEUS is useful for discriminating between benign and malignant renal tumor.

The common femoral artery haemodynamics caused by different degrees of abdominal aorta extremity stenosis in swines / 中华超声影像学杂志

Objective To study the common femoral artery haemodynamics caused by different degrees of abdominal aorta extremity stenosis.Methods The lateral walls of abdominal aorta extremity were pinched with vascular clamp resulting in 1/3,1/2,2/3,3/4 stenosis by turns in 6 juvenile susscrota domesticas.The parameters of peak systolic velocity(PSV),minimum diastolic velocity(MDV),PSV/MDV(S/D)and MDV/PSV(D/S)of common femoral artery were obtained and their correlations with degrees of abdominal aorta extremity stenosis were confirmed by statistical analysis.Results The backwardware vanished or turned to forwardware when stenosis achieved certain degree.PSV had significant negative correlation with stenosis degree(R=0.985,R2=0.969),but D/S had significant positive correlation with stenosis degree when stenosis degree exceed 1/3(R=0.918,R2=0.843).Conclusions It can be concluded there is proximal stenosis disease and change of distal effective circulating blood volume according to the Doppler velocity tracing analysis.PSV and D/S are valuable parameters,however waveform should be ignored.

Transrectal color Doppler ultrasonography detection of the haemodynamic changes within ovarian stromal blood flow in patients with polycystic ovary syndrome / 医学研究生学报

Objective: To observe the haemodynamic changes within ovarian stromal blood flow in patients with polycystic ovary syndrome(PCOS). Methods: 41 patients with PCOS and 10 ovulatory women underwent transrectal ultrasound associated with Doppler flow measurement of the artery within ovarian stroma during the early follicular phase (days 2-5 of the menstrual cycle) or any day in patients with amenorrhea . Results:The peculiar vascular pattern wich one prominent blood vessel showed passing through the ovarian stroma from ovary gate. This sign was observed in all ovaries in patients with PCOS.There was no significiant difference in Vmax、PI、RI between left and right ovary.The Vmax,PI,RI of the right ovarian stromal artery were (18.99?3.12)cm/s, 0.74?0.12, 0.50?0.03 respectively. The indices of the left ovarian stromal artery were (18.76?3.23)cm/s, 0.75?0.11, 0.49?0.04 respectively. Conclusion: Vascularization of the ovarian stroma is prominent in patients with PCOS than in the control. The decreased vascular resistance to ovarian stromal perfusion in patients with PCOS may lead to perfusion increasment. TRS can be used as a non-invasive, convenient, and sensitive method for assessing the blood flow within the ovarian stroma.

Hemodynamics caused by the arterial stenosis and influencing factor / 医学研究生学报

Arterial stenosis-induced hemodynamic changes and their evaluation have long been studied by lots of scholars by in vivo and in vitro experiments,clinical observation and improved experimental devices and methods,which has contributed a lot to the diagnosis and treatment of arterial stenosis.This review describes the current research results.

Percutaneous transhepatic gallbladder drainage under color Doppler ultrasound in critically ill patients / 医学研究生学报

Objective:To study percutaneous transhepatic gallbladder drainage(PTGD) under color Doppler ultrasound in critically ill patients with acute calculus cholecystitis.Methods:A paracentetic needl was stuck into the cholecyst after going straight through 1.5-2.5 cm hepar under color Doppler ultrasound.The operator took out the bullet core,put in a guide wire,extracted the needl,inserted a central venous catheter along the guide wire,and then drew out the bile and clusised the cholecyst with metronidazole until the extracted fluid was clear and bright.Results:PTGD immediately relieved the pain in the of upper right quadrant in all the patients.Body temperature and WBC descended obviously 24 hours and returned to normal 5 days after the operation. Conclusion:Color Doppler ultrasound guided PTGD,easy to perform and with few complications and high suness rate,is an returned effective and reliable procedure for critically ill patients who are intolerant of cholecystectomy or for whom the operation is difficult to perform.

Diagnosis of nutcracker syndrome with color Doppler flow imaging / 医学研究生学报

Objective: To investigate the diagnose nutcracker syndrome with color Doppler flow imaging.Methods:Doppler sonographic findings in 47 children with orthostatic proteinuria or idiopathic hematuria and in 23 healthy control subjects were compared.The peak velocity,anteroposterior diameter and anteroposterior diameter ratio(hilar segment/aortomesenteric segment) were measured in the left renal vein.Results: The anteroposterior diameter ratio of the 2 segments were 4.13?2.34 in the patient group and 2.16?0.56 in the control.The anteroposterior diameter and the peak velocity in the aortomesenteric segment were(0.16?0.07)cm/s and(83.3?37.2)cm/s in the patient group and(0.24?0.09)cm/s and(43.1?10.8)cm/s in the control,with significant difference in between(P

Testicular microlithiasis: ultrasonic diagnostic value and its clinical significance / 医学研究生学报

Objectives:To study the ultrasonogram, diagnosis and significance of testicular microlithiasis (TM). Methods:The clinical data and ultrasonographic outcomes of 97 patients with the genital system diseases were retrospectively analyzed. Results:Five patients with TM were found, and the prevalence of TM is 5.2%. of 5 cases, 2 cases were associated with infertility, 1 cases with orchitis,1 case with seminoma, and 1 case with mature teratoma. Three cases with varicocele,2 cases with atrophic testis, 1 case with hydrocele and 1 case with spermatocele, were found out with the use of a high frequency transducer. The sonographic appearance of TM is multiple tiny(1-3 mm),no acoustic shadowing hyperechoic foci that are randomly scattered throughout the testicular parenchyma. Conclusions:Testicular microlithiasis has been associated with a variety of clinical entities, and it is an uncommon condition in which calcified concretions fill the lumen of seminiferous tubule, commonly diagnosed by high frequency (5～10 MHz ) testicular ultrasound. The accepted standard of TM is multiple small nonshadowing hyperechoic foci up to 3 mm in size, with five or more evident on a single sonogram.